Yes, I could find out a bit more about the memory issue. I tried it again this afternoon. After 50 minutes into the action 0 "path" t [ link-info ... ] each-file the system 'top' shows RES rises above 1.2GB and %MEM becomes 15.7% and they continue to rise. It blacks out the gui window of factor.
I try to hit Control-C but it continues to run. *** How to exit a running words ? It looks like the only natural way I know of to 'stop' it is to wait for link-info to hit the missing file scenario --- like the overnight run of last night. So, I just killed the factor session from the shell. And missed the opportunity to inspect the memory usage in factor, as John suggested. Is there a way to exit running words ? [ perhaps, I need to learn to use a factor-debugger ? ] --------------------------------- Replying to John's questions about the disk layout: it is a disk with a tree of directories. directory count ~ 6000 total number of files as of now ~ 1.1 million total number of softlinks ~ 570000 total file size ~ 70GB number of files in each sub-directory (not including the files in sub-directory inside it) range from a few hundreds to as high as of the order of <~10K. Some of the directories are constantly updated throughout the day. --HP On Thu, Oct 1, 2015 at 12:27 PM, John Benediktsson <mrj...@gmail.com> wrote: > Maybe you can debug a little if you see that happen again? > > Perhaps something like this to get the largest number of instances, if > there is a per-file leak: > > IN: scratchpad all-instances [ class-of ] histogram-by > sort-values reverse 10 head . > > Some other words for inspecting memory: > > http://docs.factorcode.org/content/article-tools.memory.html > > Can you give us some information about your disk layout? > > Is it one big directory with 1 million files? Is it a tree of > directories? What do you think is average number of files per-directory? > > I opened a bug report if you'd like to provide feedback there rather than > the mailing list: > > https://github.com/slavapestov/factor/issues/1483 > > > > > On Thu, Oct 1, 2015 at 8:38 AM, HP wei <hpwe...@gmail.com> wrote: > >> Well, I just checked the running factor session that failed the >> task overnight that I mentioned in below email. >> >> From the linux system command 'top', >> I see that this particular factor is using >> VIRT 4.0g >> RES 2.0g >> %MEM 26% >> >> I clicked on the restart listener button and the numbers remain the same. >> should I have done more to clean up the memory usage ? >> >> ------------------ >> >> For comparison, I killed the factor session and restart it from the shell. >> The numbers are >> VIRT 940M >> RES 182M >> %MEM 2.2% >> >> ==> Had the factor continued to run last night, >> it would have probably exhausted the memory on the machine. >> I guess there might be some memory (leak) issue somewhere ??? >> >> --HP >> >> >> >> ---------- Forwarded message ---------- >> From: HP wei <hpwe...@gmail.com> >> Date: Thu, Oct 1, 2015 at 9:36 AM >> Subject: how to error trapping 'link-info' >> To: factor-talk@lists.sourceforge.net >> >> >> As suggested by John, I test out the following action to >> get the total file sizes of a disk volume. >> >> 0 "a_path_to_big_folder" [ link-info dup symbolic-link? [ drop ] [ size>> >> + ] if ] each-file >> >> >> Our big-folder is on a netapp server shared by tens of people. Many small >> files get updated >> every minutes if not seconds. The update may involve removing the file >> first. >> It has many many subfolders which in turn have more subfolders. >> Each subfolder may have hundreds of files (occasionally in the thousands). >> >> After a few day's discussion with factor guru's, I understand that >> each-file traverses the directory structure by first putting >> entries of a folder in a sequence. And it processes each entry one by one. >> Although this may not cause using big chunk of memory at a time, >> it does have the following issue.. >> >> ------------------------ >> >> Last night, I left the command running and came back this morning to find >> that it failed with the message. >> lstat: "a path to a file" does not exist !!! >> >> This is because after 'each-file' puts the file into the sequence and >> then when >> it is its turn to be processed, it is not there at the time!! >> Without error trapping, the above "0 ... each-file" could not work in >> our case. >> >> So, I guess I would need to do error-trapping on the word link-info. >> I do not know how to do it. Any hint ? >> >> Thanks >> HP >> >> >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Factor-talk mailing list >> Factor-talk@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/factor-talk >> >> > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Factor-talk mailing list > Factor-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/factor-talk > >
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